Effects of overlapping sources on cosmic shear estimation: Statistical sensitivity and pixel-noise bias

Kavli Affiliate: Patricia R. Burchat | First 5 Authors: Javier Sanchez, Ismael Mendoza, David P. Kirkby, Patricia R. Burchat, | Summary: In Stage-IV imaging surveys, a significant amount of the cosmologically useful information is due to sources whose images overlap with those of other sources on the sky. The cosmic shear signal is primarily encoded […]


Continue.. Effects of overlapping sources on cosmic shear estimation: Statistical sensitivity and pixel-noise bias

The Nancy Grace Roman Space Telescope Coronagraph Instrument (CGI) Technology Demonstration

Kavli Affiliate: Bruce Macintosh | First 5 Authors: N. Jeremy Kasdin, Vanessa P. Bailey, Bertrand Mennesson, Robert T. Zellem, Marie Ygouf | Summary: The Coronagraph Instrument (CGI) on the Nancy Grace Roman Space Telescope will demonstrate the high-contrast technology necessary for visible-light exoplanet imaging and spectroscopy from space via direct imaging of Jupiter-size planets and […]


Continue.. The Nancy Grace Roman Space Telescope Coronagraph Instrument (CGI) Technology Demonstration

Formation of an extended stellar halo around an ultra-faint dwarf galaxy following one of the earliest mergers from galactic building blocks

Kavli Affiliate: Anna Frebel | First 5 Authors: Yuta Tarumi, Naoki Yoshida, Anna Frebel, , | Summary: Ultra-faint dwarf galaxies (UFDs) are promising observable proxies to building blocks of galaxies formed in the early Universe. We study the formation and evolution of UFDs using cosmological hydrodynamic simulations. In particular, we show that a major merger […]


Continue.. Formation of an extended stellar halo around an ultra-faint dwarf galaxy following one of the earliest mergers from galactic building blocks

Dynamical Evolution of Voids with Surrounding Gravitational Tidal Field

Kavli Affiliate: Naoshi Sugiyama | First 5 Authors: Mutsumi Minoguchi, Atsushi J. Nishizawa, Tsutomu T. Takeuchi, Naoshi Sugiyama, | Summary: The void ellipticity distribution today can be well explained by the tidal field. Going a step further from the overall distribution, we investigate individuality on the tidal response of void shape in non-linear dynamical evolution. […]


Continue.. Dynamical Evolution of Voids with Surrounding Gravitational Tidal Field

Fermionization and boundary states in 1+1 dimensions

Kavli Affiliate: Yuji Tachikawa | First 5 Authors: Yoshiki Fukusumi, Yuji Tachikawa, Yunqin Zheng, , | Summary: In the last few years it was realized that every fermionic theory in 1+1 dimensions is a generalized Jordan-Wigner transform of a bosonic theory with a non-anomalous $mathbb{Z}_2$ symmetry. In this note we determine how the boundary states […]


Continue.. Fermionization and boundary states in 1+1 dimensions

PROBs and perverse sheaves I. Symmetric products

Kavli Affiliate: Mikhail Kapranov | First 5 Authors: Mikhail Kapranov, Vadim Schechtman, , , | Summary: Algebraic structures involving both multiplications and comultiplications (such as, e.g., bialgebras or Hopf algebras) can be encoded using PROPs (categories with PROducts and Permutations) of Adams and MacLane. To encode such structures on objects of a braided monoidal category, […]


Continue.. PROBs and perverse sheaves I. Symmetric products

Approaching the motional ground state of a 10 kg object

Kavli Affiliate: Nergis Mavalvala | First 5 Authors: Chris Whittle, Evan D. Hall, Sheila Dwyer, Nergis Mavalvala, Vivishek Sudhir | Summary: The motion of a mechanical object — even a human-sized object — should be governed by the rules of quantum mechanics. Coaxing them into a quantum state is, however, difficult: the thermal environment masks […]


Continue.. Approaching the motional ground state of a 10 kg object

Discovery of Candidate X-ray Jets in High-Redshift Quasars

Kavli Affiliate: Herman L. Marshall | First 5 Authors: Bradford Snios, Daniel A. Schwartz, Aneta Siemiginowska, MaƂgosia Sobolewska, Mark Birkinshaw | Summary: We present Chandra X-ray observations of 14 radio-loud quasars at redshifts $3 < z < 4$, selected from a well-defined sample. All quasars are detected in the 0.5-7.0 keV energy band, and resolved […]


Continue.. Discovery of Candidate X-ray Jets in High-Redshift Quasars

Feebly-Interacting Particles:FIPs 2020 Workshop Report

Kavli Affiliate: Yevgeny Stadnik | First 5 Authors: Prateek Agrawal, Martin Bauer, James Beacham, Asher Berlin, Alexey Boyarsky | Summary: With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics […]


Continue.. Feebly-Interacting Particles:FIPs 2020 Workshop Report